| 430 | } |
| 431 | |
| 432 | static int dvbsub_read_2bit_string(uint8_t *destbuf, int dbuf_len, |
| 433 | const uint8_t **srcbuf, int buf_size, |
| 434 | int non_mod, uint8_t *map_table) |
| 435 | { |
| 436 | GetBitContext gb; |
| 437 | |
| 438 | int bits; |
| 439 | int run_length; |
| 440 | int pixels_read = 0; |
| 441 | |
| 442 | init_get_bits(&gb, *srcbuf, buf_size << 3); |
| 443 | |
| 444 | while (get_bits_count(&gb) < buf_size << 3 && pixels_read < dbuf_len) { |
| 445 | bits = get_bits(&gb, 2); |
| 446 | |
| 447 | if (bits) { |
| 448 | if (non_mod != 1 || bits != 1) { |
| 449 | if (map_table) |
| 450 | *destbuf++ = map_table[bits]; |
| 451 | else |
| 452 | *destbuf++ = bits; |
| 453 | } |
| 454 | pixels_read++; |
| 455 | } else { |
| 456 | bits = get_bits1(&gb); |
| 457 | if (bits == 1) { |
| 458 | run_length = get_bits(&gb, 3) + 3; |
| 459 | bits = get_bits(&gb, 2); |
| 460 | |
| 461 | if (non_mod == 1 && bits == 1) |
| 462 | pixels_read += run_length; |
| 463 | else { |
| 464 | if (map_table) |
| 465 | bits = map_table[bits]; |
| 466 | while (run_length-- > 0 && pixels_read < dbuf_len) { |
| 467 | *destbuf++ = bits; |
| 468 | pixels_read++; |
| 469 | } |
| 470 | } |
| 471 | } else { |
| 472 | bits = get_bits1(&gb); |
| 473 | if (bits == 0) { |
| 474 | bits = get_bits(&gb, 2); |
| 475 | if (bits == 2) { |
| 476 | run_length = get_bits(&gb, 4) + 12; |
| 477 | bits = get_bits(&gb, 2); |
| 478 | |
| 479 | if (non_mod == 1 && bits == 1) |
| 480 | pixels_read += run_length; |
| 481 | else { |
| 482 | if (map_table) |
| 483 | bits = map_table[bits]; |
| 484 | while (run_length-- > 0 && pixels_read < dbuf_len) { |
| 485 | *destbuf++ = bits; |
| 486 | pixels_read++; |
| 487 | } |
| 488 | } |
| 489 | } else if (bits == 3) { |
no test coverage detected